When substituting the outdoor system, should the indoor unit also be replaced?

Our reply is, it’s a smart method. Here's why.

Matched design—Your furnace is made to run with a paired air conditioner. This might help enhance energy efficiency and performance.

Technology advancements—There have been many recent advances in HVAC technology, especially in energy efficiency, air filtration and quiet operation. You’ll get these perks year-round when you improve the complete system.

Higher heating and cooling efficiency—Efficiency levels are formed on matched equipment performance. While getting one new unit will improve performance, efficiency will be lower from what it was engineered to be. And your savings will not be as much as they’d be with a matched system.

Equipment age—If your AC is 10 years old (or older), your heater is likely just as old. Switching both means you’ll receive lots of years of efficient comfort, no matter the season.

Up-to-date warranty—A new system also means you’ll receive updated equipment warranties. You’ll get peace of mind knowing the warranty covers your entire system for the same time period.

At first glance, getting only a new AC or heating system might appear to be a smart decision. But it’s not quite a good choice when you consider reduced efficiency.

Getting an entirely new system could cost more, but you earn much better efficiency, reliability and comfort for years to come in San Antonio.